Fine the length of the middle line

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left

Two students were asked if they liked to read. is this a good example of a statistical question? why or why not? a yes, this is a good statistical question because a variety of answers are given. b yes, this is a good statistical question because there are not a variety of answers that could be given. c no, this is not a good statistical question because there are not a variety of answers that could be given. no, this is not a good statistical question because there are a variety of answers that could be given

An object in geometry with no width, length or height is a(n):